<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Login</title>
</head>
<body>
    错误信息: <h4 th:text="${msg}"></h4>
    <form action="" method="post">
        <p>账号: <input type="text" name="username" value="admin"/></p>
        <p>密码: <input type="text" name="password" value="123456"></p>
        <p><input type="submit" value="登录"/></p>
    </form>
</body>
</html>